Device for removing gear-wheels, &amp;c.



G. W. SCHILLING.

DEVICE FOR REMOVING GEAR WHEELS, 64c.

APPLICATION HLED OCT-19' I91]. 1 ,268,285. Patented June 4. 1918.

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DEVICE FOR REMOVING GEAR WHEELS, 61c.

APPLIQATIDN HliD 66133-19],- 1,268,285. Patented June 4, 1918.

2 SHEETS SHEET 2 hlz'fnessas; 6. 6 My.

j, S, and 9. The outer ends of the GEORGE W. SCHILLING. OF PHILADELPHIA, PENNSYLVANIA.

DEVICE FOR REMOVING GEAR-WHEELS. 86C.

Specification of Letters Patent.

Patented June 4, 1918.

Application filed October 19, 1917-. Serial No. 197,385.

To 7! whom it may concern.

lie it known that I. (henna-2 W. Scnnmlso. a citizen of the l'nitcll Slates. residing at lhilzulelphia. in the county of Philadelphia and State of Pennsylvania. have invented certain new and useful Improvements in De vices for Removing (tear-\l'heels, &c.. of which the following is a specification.

()ne object of my invention is to provide a device for removing gear wheels. pulleys, couplings, etc. from shafts. and which can he operated easily and quickly.

A further ohject is to so construrt my invention that it may he applied and opera d without injuring the shaft to whit-h it is applied or the :lllll'h hie-h is to lie rcnunwl from the shaft.

Another object is to make my improved device of a simple and durahlc construction which is portable.

These objects. and other advantageous ends which will be descrihed lu-reinatter, I attain in the following manner. reference living; had to the aceolnpan \'in; drawings in which Figure I is a front elevation of my inrprored device illustrated together with a.

shaft and gear wheel and showing the parts nrthelr operative position read to he oper ated to remove said gear uhrol from the shaft,

Fig. 2 is an end \'it'\\' of Fig. 1 looking in the direction of the arrow .1,

Fig. 3 is an end eleration of Fig. l lookingin the direction of the arrow 7 Fig. 4 is an enlarged view of a plunger and centering pin which form parts of my invention,

Fig. 5 is an end view of Fig. 4,

Fig. 6 is a longitudinal elevation of one of two cross levers which form a part of my invention, 1

Fig. 7 is an end view of Fig. 6. and

Fig. 8 is a fragmentary section taken on the line 8--8 of Fig. 2 showing the position which the parts assume when a filling. block is inserted to project the plunger a greater distance out of the head than shown in Fig. 1.

Referring to the drawings, 1 represents a shaft having a gear wheel 2 thereon. said geanwheel heing fixed to the shaft by means of a hey 3 as is the usual custom of attaching a gear wheel t a shaft. A metallic head 4 includes a huh 5 and four radial arms 6. arms 6 respectiv ly (ax-- these holts are length and 7 have bolts 10 and ll tending there-through and screw threaded for a portion ol' their and provided with nuts 1:! and 13.

Links or plates 14 and 13 are pinned on the re pective bolts '10 and ll aml are secured thereon hy the nuts in and l-l. These link 14 and 1.7 at their opposite ends have holts it and 17 r:-:tendin; tln-rrlloough whirl! 2malso threaded through a portion of their length and have nuts IR and in which engage the links ll and 13. as learly shown in Figs. 1 and L.

Two cross low-w :JH and 3! each. ha re holes adjacent their oppo ite ends and through which the opposite cull portions of the llolls l1 and 1? and It) and 1t extend. Thus the cross levers 20 and El are res n-ctirely in alinement with the links 14 and 15. The cross levers 20 and 21 are held upon the bolts hy nuts 23. said nuts being designed to engage recessed portions 24 formed in the outer surface 95 of the cross levers. Each of the cross levers 20 and 21 has an elongated convex or outwardly curved sin Face 20 which is designed to engage the surface 27 oi the gear wheel as learly shown in Figs. 1 and 3.

The arms 9 and 9 some as guiding arms a ml are located to the rear of the linhs H and 15. These guiding arms have guiding surfaces which are curred in arcs concentric with the axes of the respective bolts 10 and ll. a clearly shown in Fig. 2. These guiding surfaces 29 terminate in recesses 29 so that the holts l6 and 17 will be guided by and confined adjacent the guiding sur 1' aces Q8 and the recesses 29 form pockets to limit the outward swing of the plates 14 and 15 on the holts 1t) and 11 as pivots.

The huh 5 has a. cylindrical hole 30 in which is slidahly mounted. a plunger 31. This plunger with the exception of an angular cut-out portion 32 is cylindrical and slidahly fits the cylindrical hole 30, as clearly shown in Fig. 1. The cut-out portion 212 provides a shoulder 33 and also pen mils room to prevent keys on exceptionally small shafts to pass within the cylindrical hole 30 so as to permit the complete with drawal of the gear or other article from the shaft. as will hereinafter he fully explained.

The plunger 31 has a cylindrical hole 3'! in which is slidahly mounted a centering pin :55 which has a conical end 36 which is de signed to engage the center hole 37 in the shaft 1. (entering holes as illustrated in 37 are usually provided in the ends of shafts for receiving an instrument to ascertain the speed of the shaft.

T-he centering pin 35 is backed by a coiled spring 38, thus t to centering pin, being reslliently pressed will not input: or disligllre the centering ho e 27 of the shaft. The con tering-pin 35 is cut away throughout a portion of its length, as shown at 39, and the limiting screw 40 is inserted through the plunger 31 so as to be engaged by a shoulder 41 formed by said cut-out portion 39 of the center-in; pin.

The hub 5 has a scl'mV-thrcadetL hole 42 in which is mounted a comparatively heavy screw 43. The hole 42 leads into the cylindrical hole 3 so that the screw 43 can engage the inner end of the plunger 31 and causes the latt r to be moved longitudinally within the hub 5. A retaining set screw it extends into the hole 30 and is designtal to b: abntted b the shoulder 33 of the plunger 31. Thus the retaining screw -l-l prevents the plunger 31 from accidentally falling out of the hub 5 but permits relatively longitudinal movement between the plunger 31 and the hub 5. as will be described hereinafter.

The arms (3 have holes -15 extending therethrough either of which is adapted to receive a lever-'46. This lever it? is adapted to ex tend to the floor or any other stati nary object. and permits the nuts l2, l3, l8. and 19 to he turned without the rotation of the entire head 4.

In the operation of my invention it will be readily understood that by turning the nuts on the respective bolts, the head i and cross levers 20 and 2] will he moved toward each other causing the plunger 31 to abut the end ot the shaft l and since the convex surface 26 of the cross levers 2 1 and 31 engage the surt'ace 27 of the car 2. the gear will he forced longitudinally along the shaft 1 and finally removed from the end of the shaft. In the use of my invention it is preferable to first start the gcar'wheel 2 by the rotation of the nuts 1'2, 13 18, and 19 and after the gear has been started in its movement from the shaft it is merely necessary to turn the screw so that it Wlll engage the end of the plunger 31; this will cause a rela tivo movement between the head 4 and the plunger 31, and. the gear can be easily removed by the. action of the screw 43.

It is understood of course thatthe initial movement of the gear 2 longitudinally of the shaft requires greater power than after the gear has been initially moved; hence the bolts and nuts may be used to initially move the ear and afterward the screw 43 can be as and, with a. single operation the gear can be entirely removed.

If an extremely wide face gear or a long coupling is to be ren'ioved. a filling block 4-7 can be interposed between the inner end of the plunger ill and the inner end of the cylindrical hole 30, as clearly shown in Fig. 8. To permit the entrance of this filling liloch l7 a cavity i8 is formed through the hub. as clearly shown in Figs 2 and 8.

By providing the cross levers Q0 and. All with the convex engaging surfaces 26 vurious degrees of leverage can be obtained since the convex surfaces fulcrum on the surface :37 of the gear or a similar surface ot any other article which it is desired to remove. Furthermore by providing the guiding arms 8 with the guiding surfaces 28 the bolts 16 and 17 can be swung into positions attaching the circumference of the gear win-ch as clearly shown in Fig. 2, and therelr, secures a direct leverage at points adjacent the gear.

l prei'cralily make the bolt hole" 2;! 1n the rz-o. tewrs 2t and it slightly larger than the diameter of the bolts it], 11, 1t and 17 so that the cross levers are free to roclr on their onvex .--i1il'uces; '.asrlearly shown in Fig. l. l nrtherumre the bolt holes in the arms ti and T and in the links 14 and 15 are also preferably made sli htly larger than the bolts to permit the b0 ts to extend at slight anglcs according to the direction of poll and position of the cross levers 20 and 2t. Thus the parts can adjust the1nselves in accordance with the movement of the nuts on the bolts.

My invention can be easily operated by one lnan since the nuts 12!, 13, 18, and It) can he successively turned or if desired the llllts 225 can also be turned, and above stated after the gear has been initially inovcd then it an be quickly removed directly by the single screw 13.

While 1 have described my in ention as taking a particular l'orin, it. will be understood that the various parts of my invention may he changed without departing from the spirit thereof, and hence I do not limit mysell to the precise construction set forth, but consider that I an] t liberty to make such changes and 'alteratituis as fairly come within the scope of the appended claims.

llaving thus described my invention, what 1 claim as new and desire to secure by Letters Patent is:

1. A device of the character described including a head; clamping bolts carried by the head; and a cross lever carried by said bolts, said head and said cross lever being movable relatively to each other throu h the medium of said clamping bolts, on stantially as described.

'2. A device of the character described including a head; clamping bolts carried by the head; and a cross lever carried by said bolts, saidhead and said cross lever being movable relatively to each other through the medium of eaid clamping bolts, said cross lever including n elongated convex engaging surface. located hctwecn the points of connection of said holts with said latter cross lc\ er. suhstanl iallv as deserihed.

3. A dcvictg adapted to remove an article from a shaft. including a head having a hole therein: a plunger within said hole and adamed to ahut the end of the shaft; means for engagement with :1 enrl'ace of said ar-- ticle opposite said cud of the shaft; and means for movin; said head and said latter means relatively to each other to cause said first means to mote the article relatively to the shaft. sul'istantiallv as described.

t A device, adapted to remove an arti le from a sha lt. including a head having a hole therein: :1 plunger within said hole and adapted to abut the end of the shaft; meansv for engagement with a surface of said art'icle opposite said end of the shaft; means tor moving said head and said latter meant relatively to each other to cause said first lllt'tltlS to move the article relatively to the shaft: and means for moving said plunger l innitndinall} 0i said holc Within, the head, substantially as descrihed.

5. A device dapted to remove an article from a shafh including a head having a hole therein; a plunger within said hole and adapt cd to abut, the end of the shaft; means for engagement with a surface of said article opposite said end of the shaft: means or moving said head and said latter means relativel v to each other to cause said first means to more the article relatively to the shaft; said plunger including a centering'pin for engagement with a centering hole in said end of said shaft; and a spring forming a re silient backing for said. centering pin. snh stantiallv as dcscril'ied.

i. A devi e. adapted to remove an article from :1 shall, including a head havi'ng a holc therein: a plunger within said hole and adapted to abut the end of the shaft; means f r engagement with the surface of said article opposite said end of the shaft: means for moving said head and said latter means relatively to each other to cause said first means to move the article relatively to the shaftg means tor moving said plunger longitudinally of said hole within the head; and Int-ans for limiting the longitudinal, movement of said plunger within said head, substantially as described.

A device, adapted to remove an arti le from a shaft. including a head: means on said head for engaging the end of the sha ll cross levers adapted to engage a surface of said article opposite to said end of the aha it; and clamping bolts: opcratively connecting said head and said cross levers, substantially as described.

FL-A device, adapted to remove an article from a shaft, int-hurling a head; means on said head for engaging thc rod of the shaft; cross levers; and clamping nulls connecting said head and said cross levers, said cross levers having elongated onvex surfaces for engagement with a su' race ot' said article remote from said end d' the shaft, suhstan t.iall v as described.

A device. adapted to remove an article from a shaft. including; a head having a hole therein: :1 hilip} 1' within said hole and :ulaptcd to alnu he end ol' the shaft; cross) levers having eluigratcd convex surfaces for engagement with a sl'trl'a c f said article remote from said end of the shalt: and clamping holts onnecting opposite ends of said cross levers with the head. suhstantiallv as described.

10. A device. adapted to remove an arti le from a shaft, including a head having a hole therein: a plunger within said hole and adapted to abut the end ol' the wllttl ll crow lcHls having clongatcd convex s1|rl'ar1- for cngzagenn-nt with a sHlliit't' ot said arti le r mote from said cud ol' the sha l't: clamping liolts connecting opposite ends of aid cross levers with the haul: and :1 scrcvv lilting within said head and adapted to more aid plunger relativclv to the head to increase the distance lietvvcen said head and said end ol the shalt, suhstanliall as described ll. A device. adapted to remove an article from a shaft, including a head havin; a hole therein; a )lnngrer within said hole and adapted to alnlt the end of the shaft; m ans for engagement with the surface ol' -ai1l article opposite said end of the shaft: and means for moving said head and said latter means relatively to each other to cause wi l tirstnicans to move the article relatively to the shaft. said head ha ving a avity therein uln-rchv lillin; material may he interposed llt'lwfitlt the inner end of said planner and the inner cud of said hole. tlllrd'tlltt-lilllv 3H ilc-ci'llie ,l.

l2. device, adapted to remove an article from a shaft including a hcad; clamping liolts secured in said head and extending substantially in the direction ol' the length of said shall; links pivolallv secured to said h ad: clampimg holts carried lrv said linhs and extclnlinn substantially in the direction of the length of head for engagement with an end of said shaft; and crosslevcrs carried jointly hy respcctive bolts on the head and on said links, snltl cross levers heiug. adapted to engage :1 surface of said article remote from said end of the draft, substantially tls dcscrihed 13. A device. adapted to rqmov -1n arlicle from a shall. including a head: clamping holt secured in said head and extending sullstantiallv in the dircction ol' the length of .xillll shalt; lllllis pivotally se ured to v aid head; clamping hulls carried hv said lllllx'S and extending substantially in the direction i 1 said shalt; HI ans om Stud lLn of the length of said shaft; means on said head for engagement with an end of said shaft; and cross levers carried jointly by respective bolts on the head and on said links, said cross levers ha ving elongated convex surfaces extending between their corn necting bolts and adapted to engage a surface of said article which is remote from said end of the shaft, Sllllsllzll'itlillbt' as dos rihed.

14. A device, adapted to remove an article from a shaft, including a head having a hub and arms projectin r from the hub; means carried by said heat for abutting an end of said shaft; clamping bolts sllpllK'Hfi'Qtl by ccrtain of said arms and extending substantially in the direction of the length of said shaft; links pivoted on each of said clamping bolt; other bolts carried by said links; the other oi said arms being adapted to be slidablv en gaged by said links and having gnit'lingzj snr faces for said latter mentioned hole-i; and cross levers carried jointly by 1". lawtive bolts on said first meniimied arms and said links, said cross levers being adapted to engage a surface of said article remote from said end of the shaft, substantiall as, Lle scribed.

15. A device, adapted to remove an article from a shaft, including a head having a hub and arms projecting from the hub; means carried by said headfor abutting an end of said shaft; clamping bolts supported by certain of said arms and extending substantiall in the direction of the-length of said shaft; links pivoted on each of said clamp ing bolts; other bolts carried by said links; the other of said arms being adapted to he slidably engaged by said links and having guiding surfaces for said latter mentioned bolts, and cross levers carried jointly by respective bolts on said first mentioned arms and said links, said cross levers being adapted to engage a surface. of said article remote from said end of the shaft; said seeond'men tinned arms having recesses therein providing pockets for the second mentioned bolts and thereby limiting the pivotal movement of said links in one direction, substantially as described.

10. A device, adapted to remove an article from a shaft, including a head; means on said head for engaging the end of the shaft; cross levers adapted to ngage a surface of said article opposite to said end of the shaft; clamping, bolts connecting said head and said cross liners; and inrans for engagement with said head and. an adjacent stationary article whereby the nnls of said bolts an e r tat d without rotating: said head substantially as tltmtflilJt-fll.

ti'. 4'! den lii, adapted to rrniove an ar icle from a shaft, including; a head, nwaizs on said head t r ei agring that a] oi th shall,

b ross levers adapted to my e a snrtace (it said article opposit to said eiid oi the shaft, clamping bolts connecting said head and said cross levers; and a lever for engagement with said head and an adjacent stationary article whereby the nuts of salt bolts can be rotated Without rotating said head, substantially described.

In testimony wheicof I have signed my name to this specification in the presence of two subscribing witnesses.

GEORGE W. SCHlLLiNG. Witnesses MARX vA. INGLAR, 

